We offer phosphomolybdic acid. Material : phospho molybdic acid formula : h3 mo12 o4 p.xh2o molecular weight : 1825.28 appearance : yellowish fine crystals assay :99% min maximum impurities : chloride (cl) max 0.05% sulphate (so4) max 0.01% lead (pb) max 0.002% copper (cu) max 0.01% iron (fe) max 0.002% calcium (ca) max 0.01% all these analysis are analyzed at our own laboratory. Thanks with best regards. Paresh prajapati cell no +91-99250-03910 dimple associates india